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Communication with M-Bus
2CMC48001M0201
275
A43/A44
Revision: C
User Manual
Byte No.
Size
Value
Description
10
1
13
VIFE tariff
11
1
xx
New tariff
12
1
xx
CS checksum, calculated from C field to last data
13
1
16
Stop character
10.5.2 Set primary address
The primary address is set by sending the following command (all values are
hexadecimal). The command is not affected by the write protection level set.
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
06
L-field, calculated from C field to last user data
3
1
06
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
7
1
51
CI-field, data send, LSB first
8
1
01
DIF size, 8 bit integer
9
1
7A
VIFE Bus Address
10
1
xx
New primary address
11
1
xx
CS checksum, calculated from C field to last data
12
1
16
Stop character
10.5.3 Change baud rate
The baud rate of the electrical M-Bus interface is set by sending the following
command (all values are hexadecimal). The command is not affected by the
write protection level set.
After the baud rate has been changed a command must be sent to the meter (any
command, for example NKE or REQ_UD2) that is received correctly by the
me-ter before a certain time out time (normally 30 seconds) for the meter to
keep the new baud rate. Otherwise the meter falls back to use the baud rate that
was used before the baud rate change. This functionality is used to prevent
changing to a baud rate that doesn’t work for some reason.
Byte No.
Size
Value
Description
1
1
68
Start character
2
1
03
L-field, calculated from C field to last user data
3
1
03
L-field, repeated
4
1
68
Start character
5
1
53/73
C-field, SND_UD
6
1
xx
A-field, address
7
1
Bx
CI-field, New baud rate (where x=>8..F)
8
1
xx
CS checksum, calculated from C field to last data
Summary of Contents for A43
Page 1: ...A43 A44 User Manual ...
Page 40: ...Meter Settings A43 A44 40 2CMC48001M0201 User Manual Revision C ...
Page 55: ...Technical Description 2CMC48001M0201 55 A43 A44 Revision C User Manual ...
Page 58: ...Technical Description A43 A44 58 2CMC48001M0201 User Manual Revision C ...
Page 61: ...Technical Description 2CMC48001M0201 61 A43 A44 Revision C User Manual ...
Page 75: ...Technical Description 2CMC48001M0201 75 A43 A44 Revision C User Manual ...
Page 84: ...Measurement Methods A43 A44 84 2CMC48001M0201 User Manual Revision C ...
Page 91: ...Measurement Methods 2CMC48001M0201 91 A43 A44 Revision C User Manual ...
Page 95: ...Measurement Methods 2CMC48001M0201 95 A43 A44 Revision C User Manual ...
Page 102: ...Communication with Modbus A43 A44 102 2CMC48001M0201 User Manual Revision C ...
Page 107: ...Communication with Modbus 2CMC48001M0201 107 A43 A44 Revision C User Manual ...
Page 131: ...Communication with Modbus 2CMC48001M0201 131 A43 A44 Revision C User Manual ...
Page 147: ...Communication with Modbus 2CMC48001M0201 147 A43 A44 Revision C User Manual ...
Page 154: ...Communication with Modbus A43 A44 154 2CMC48001M0201 User Manual Revision C ...
Page 157: ...Communication with Modbus 2CMC48001M0201 157 A43 A44 Revision C User Manual ...
Page 161: ...Communication with Modbus 2CMC48001M0201 161 A43 A44 Revision C User Manual ...
Page 166: ...Communication with Modbus A43 A44 166 2CMC48001M0201 User Manual Revision C ...
Page 180: ...Communication with M Bus A43 A44 180 2CMC48001M0201 User Manual Revision C ...
Page 182: ...Communication with M Bus A43 A44 182 2CMC48001M0201 User Manual Revision C ...
Page 188: ...Communication with M Bus A43 A44 188 2CMC48001M0201 User Manual Revision C ...
Page 195: ...Communication with M Bus 2CMC48001M0201 195 A43 A44 Revision C User Manual ...
Page 254: ...Communication with M Bus A43 A44 254 2CMC48001M0201 User Manual Revision C ...
Page 257: ...Communication with M Bus 2CMC48001M0201 257 A43 A44 Revision C User Manual ...